Arms trade and cooperation

International cooperation has not made the arms trade unnecessary, because cooperation remains too shallow to guarantee security, so buying arms stays necessary for states facing real threats; but selling arms is necessity of a different kind, driven by profit and influence rather than survival, and there cooperation should make us question how 'necessary' it really is.

• For buyers, the arms trade remains necessary because cooperation does not yet guarantee security.
  Why While no state can be sure others will defend it, self-help requires arms, so a country buys weapons precisely because cooperation is incomplete, which is the realist logic the question underrates.
  Example Ukraine became the world's largest arms importer in 2020-24, its imports rising sharply after invasion, showing that cooperation did not remove the need to arm when survival was at stake (SIPRI, as_of 2026-06).
  Then evaluate But buying arms can also feed the insecurity it answers, since one state's defence is another's threat, so necessity here is real but self-reinforcing.
• Small states in particular find arming necessary even within cooperative orders.
  Why A small state cannot rely on others' goodwill, so credible defence underwrites the diplomacy and deterrence that let it survive among larger powers, making arms part of, not a substitute for, cooperation.
  Example Singapore maintains a strong, technologically advanced defence force and significant arms imports despite deep regional and global cooperation, treating capability as the precondition for influence (widely documented, as_of 2026-06).
  Then evaluate The complication: this shows cooperation and arming are complements, not alternatives, which the question's framing of them as a trade-off misses.
• Selling arms is a different and weaker kind of necessity, driven by profit and leverage rather than survival.
  Why Major exporters sell weapons for revenue, jobs and geopolitical influence, so the 'necessity' of the arms trade for sellers is economic and strategic choice, not existential need.
  Example The United States supplied 43% of global arms exports in 2020-24, increasing its share, a position of profit and influence rather than necessity (SIPRI, as_of 2026-06).
  Then evaluate So the question's 'necessary' applies far less to sellers, and cooperation should make a great power's choice to fuel others' conflicts harder to justify, not easier.
• Cooperation reduces necessity only where it is deep enough to make defection unthinkable.
  Why Where states are so integrated that war between them is inconceivable, the arms trade among them genuinely loses its rationale, so the depth of cooperation, not its mere existence, sets the necessity.
  Example Long peace among deeply integrated European democracies has made intra-European war improbable, even as the same states arm heavily against external threats (global pattern, as_of 2026-06).
  Then evaluate The honest calibration: cooperation lowers the necessity of arming against partners while leaving it intact against rivals, so necessity is conditional, not abolished.

The question rests on a premise worth challenging: that international cooperation has meaningfully increased, when the 2020s show cooperation and conflict rising together, so the arms trade is not a relic that cooperation is rendering unnecessary but a feature of a world where cooperation is precisely what is fraying, which inverts the question's logic.

• The premise that cooperation is rising is at best half-true, and the trend may be the reverse.
  Why Great-power rivalry, trade decoupling and active wars suggest the cooperative order is under strain, so the assumption that we are moving toward less need for arms misreads the moment.
  Example The surge in arms imports, with Ukraine's rising nearly a hundredfold in 2020-24 and European imports nearly doubling, signals a world arming up, not standing down (SIPRI, as_of 2026-06).
  Then evaluate So the question's 'given greater cooperation' may be granting a premise the evidence does not support.
• Where cooperation has deepened, it often runs through the arms trade rather than against it.
  Why Alliances are sustained by arms transfers that bind partners together, so weapons sales are an instrument of cooperation, not its opposite, which the question's framing cannot accommodate.
  Example US arms exports to allies, at 43% of the global total in 2020-24 and reaching dozens of states, function as the connective tissue of its alliance system (SIPRI, as_of 2026-06).
  Then evaluate The complication: if the arms trade is how cooperation is conducted, then more cooperation can mean more arms trade, not less.
• The genuinely cooperative response is not abolishing the arms trade but governing it, which is a different goal.
  Why Since weapons will be made and bought, cooperation's realistic contribution is shared rules on what is sold to whom, so the question of necessity gives way to the question of control.
  Example The Arms Trade Treaty and export-control regimes represent cooperation aimed at regulating the trade rather than ending it, accepting its persistence (widely documented, as_of 2026-06).
  Then evaluate This reframes the question: cooperation makes the arms trade more accountable, not less necessary.
• The deepest necessity is structural, rooted in anarchy, which cooperation softens but does not remove.
  Why With no world government to guarantee security, states must ultimately rely on self-help, so the arms trade reflects the permanent condition of international politics that cooperation can manage but not abolish.
  Example Even the most cooperative states maintain and import advanced weapons, as Singapore and European democracies do, because no level of cooperation has yet replaced self-defence (global pattern, as_of 2026-06).
  Then evaluate The payoff: the arms trade is necessary not because cooperation is too little but because the international system has no substitute for self-help, which the question's hopeful premise overlooks.